When selling equipment, some will be named with red font, and others with blue font.

Blue font means that the item have 1slot or 2slots for crystal(s), and red equipment does not. Most equipment comes in both varieties. Both sell for the same price, so be sure to keep your blue equipment over your red!

Note: Equipment stats are based off of the Japanese wiki site, so max stats may not be 100% accurate in the English version.